Ok, so i am new, to new to tell how one chalk plays differently from another..but...here is what i have noticed. I have a Dark green cloth..so Master chalk is out, since they only make light green. Was using Silver Cup, tried National Tournament becasue i saw a report that ranked it higher. Again, i cant tell any difference playability wise, BUT..the National Tournament leaves a MUCH larger area of chalk dust when applying chalk then the Silver cup does. I am guessing that over time this is an issue. Anyone else have ideas/experince with this? TIA